.update-nag should be relocated along with .updated and .error

[georgestephanis]

Currently we're relocationg .updated and .error beneath .wrap h2:first but .update-nag is left alone at the top of the page, making pages look ugly and awkward with its conflicting location.

​https://github.com/WordPress/WordPress/blob/ce1ace63474287dd6c9368d3fadf9c898a2bf4f6/wp-admin/js/common.js#L345

​https://github.com/WordPress/WordPress/commit/0cfdd413

[helen]

I thought this was purposeful because of the contents, and also the discussion about it not being full-width. See #26595.

[georgestephanis]

Duplicate of #26595.

Yup, thanks, couldn't find the other ticket. I'll just add the relocation in manually to my stuff.